Submission #1775933

---

Source Code Expand

#include <bits/stdc++.h>

using namespace std;

int main(void) {
  int n, x;
  cin >> n >> x;

  if (x == 1 || x == 2 * n - 1) {
    cout << "No\n";
  } else {
    cout << "Yes\n";
    
    vector<int> ans(2 * n - 1, - 1);
    int p = n - 1, q = x;
    while (ans[p] < 0) {
      ans[p] = q;
      p = (p + 1) % (2 * n - 1);
      q = (q + 1) % (2 * n - 1);
    }

    for (int i = 0; i < 2 * n - 1; i++) {
      cout << (ans[i] ? ans[i] : 2 * n - 1) << endl;
    }
  }

  return 0;
}

Submission Info

Judge Result